Reduced Friction Plain Bearings for Advanced Exhaust Gas Turbochargers
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BMTS Technology has developed a new type of 3-D plain bearing for Advanced Exhaust Gas Turbochargers with significantly reduced friction. It is based on a three-dimensional hydrodynamic active principle with increased power density and offers significant potential for increasing turbocharger efficiency.
Influence of frictional power of exhaust gas turbochargers
According to the current EU targets, fleet consumption of passenger cars must be reduced by 37.5 % by 2030 compared to the 2021 targets . In addition to many other strategies for reducing fuel consumption, it is therefore essential to further increase the efficiency of the combustion engine, especially in the case of high volume vehicles.
As an essential component of gas exchange, the turbocharger is of particular importance here. In addition to an accurately selected dimensioning of the compressor and the turbine, a reduction in friction represents an equivalent influence. The adaptation of the bearing arrangement as a...
Dr.-Ing. Steffen Schmitt, technical specialist for bearing validation and test benches, Dipl.-Ing. (FH) Simon Nibler, project manager advance development, and Oliver Kuhne, M. Sc., design engineer for bearings and core units, also participated in the preparation of the article. Additional thanks to all other colleagues involved at BMTS Technology for their support in the 3-D bearing project.